
/* 伸缩布局 */

.H_flex_nowrap{
  /* 横向不换行 */
	display: flex;
}
.H_flex_wrap{
  /* 横向换行 */
	display: flex;
	flex-wrap: wrap;
}
.H_flex_column{ 
  /* 纵向布局 */
  display: flex;
  flex-direction: column;
}
/* justify */
.H_justify_around{
  justify-content: space-around;
}
.H_justify_between{
	justify-content: space-between;
}
.H_justify_center{
  justify-content: center;
}
.H_justify_start{
  justify-content:flex-start;
}
.H_justify_end{
  justify-content:flex-end;
}
/* align */
.H_align_center{
  align-items: center;
}

.H_align_start{
  align-items: flex-start;
}

.H_align_start_content {
	align-content: flex-start;
}

.H_align_end{
  align-items: flex-end;
}

.box_sizing{
  box-sizing: border-box;
} 

